Dry gas holder



July s, 1934. W PECHSTHN 1,965,536

DRY GAS HOLDER Filed Feb. ll. 1932 bf fr' @l 4 L? f S ATTORNEYS Patented July 3, 1934 UNITED STATES PATENT OFFICE DRY GAS HOLDER Application February 11, 1932, Serial No. 592,433 In Germany March 19, 1931 1 Claim.

This invention relates to improvements in guiding device for sealing plungers of containers for the storage of gas and the like.

Sealing plungers as they are used for instance on waterless gas containers are guided by two series of rollers, one series of which is mounted on the disc itself, while the other one is disposed above the disc. The pressure produced when the plunger assumes a slanting position or when it is subjected to non-uniform load is absorbed by the rollers, which rollers, therefore, must be nonyieldingly connected with the disc. This connection of the upper rollers with the disc is effected by struts, and these struts again are reinforced by trusses against breaking in vertical direction, and are strengthened against a lateral bending strain by a second Wind-truss. This construction of the guiding device has the disadvantage that it is costly owing to the increase of the weight.

According to the present invention the upper ends of the uprights supporting the upper rollers are interconnected by a ring which ring absorbs the pressures of the rollers when the plunger assumes a slanting position or is subjected to uni-lateral load.

This arrangement of the guiding device has the advantage that it may be produced in a most simple way and is of less weight than the known guiding devices, whereby the manufacturing costs are greatly reduced.

In the drawing the subject matter of the invention is shown in several embodiments.

Figure l is a side elevation of the plunger.

Figure 2 is a partial plan View showing a circular ring.

Figure 3 is another partial plan View showing a polygonal ring.

Figure 4 shows in a vertical fragmentary sec- 40 tion one form of a ring.

Figure 5 shows in a similar vertical partial section a simplified ring.

Referring to the drawing, 1 indicates a shell, a container having a sealing plunger or piston 45 2, movable therein. The sealing plunger 2 is provided with vertical posts 3, connected at their upper ends by a ring 4; the posts are reinforced by diagonal truss rods or bars 5 5, and carry upper and lower sets of guide rollers 6, 7, which 50 travel along and bear against the inner wall of the container 1.

In the embodiment illustrated in Figure 2, the ring is circular, while in Figure 4, it has the form of a polygon, the posts in the polygon form being mounted at the corners.

According to Figure 4, the ring is constructed as a circular flat structure composed of a sheet metal plate 8, but in a large holder of a series of plates bolted together serving as a walk to be used by an operator to inspect the parts. The plate 8 at its opposite margins, is provided with angle iron reinforcements 9, 10, 1l, and at its under side, with brackets respectively fixed to the posts. This arrangement of ring has the advantage that the bearings of the upper rollers 6 are readily accessible at any time.

Figure 5 shows a simplied embodiment of the ring 4, which in this embodiment, is made up of rolled, structural angle irons and is particularly useful for a polygonal ring.

The piston or plunger 2 providing the movable closure for the container is in sealing contact with the inner wall surface of the container. Various types of seals may be employed, as fluid or flexible packing compressed against the container, but as the structure or kind of seal forms no part of the present invention detailed description and illustration thereof is herein omitted.

Having described my invention, I claim:

In a dry gas holder, the combination of a shell, a piston closure movable within the shell, vertical posts secured to the upper side of the piston closure in spaced relation circumferentially about the closure, said posts carrying upper and lower guiding rollers in guiding contact with the inner surface of the shell, a ring fixed to the upper ends of the posts concentric with the piston closure and of channel form of a surface width providing an annular walk way for an attendant, and cross truss bars between and connecting the posts and With the ring combining to form an annular structure.

WALTER PECHSTEIN. 

